NCERT Solutions for Class 7 Science Chapter 11
Important NCERT Questions
7th Chapter 11 Transportation in Animals and Plants
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 2 Part: iv
Fill in the blanks: The rhythmic expansion and contraction of the heart is called ___________.
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The rhythmic expansion and contraction of the heart is called heartbeat.
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